KCNC Alloy Chainring Bolts - MTB x4 Color:Green Hex Tool Quick Release Skewer

Hex Tool Quick Release Skewer

Total length 5

Shimano Ultegra (Ultegra)

The down tube  is still a big stiff 45mm but has been subtly manipulated to increase weld area and improve stiffness

KQR08 6061 alloy axles spec :-

KCNC Alloy Chainring Bolts - MTB x4 Color:Green Hex Tool Quick Release SkewerKCNC Chainring Bolts in Anodised Gold, Green, Red, Silver, Blue and Black. Available in standard size to attach 2 chainrings with the same bolt, or single ring to attach just one chainring. Machined from 7075 Al alloy, laser etched with KCNC Will fit most chainrings and spiders Shimano XTR (not 960, see XTR960 listing), XT, Truvativ, etc. M8 thread Size Standard Female (inner side) shank diameter 10mm, length 6. 5mm, head: diameter 12mm, length 1.